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参数资料
| 型号： | TDA744813TR |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 音频控制 |
| 英文描述： | 6 CHANNEL(S), VOLUME CONTROL CIRCUIT, PDSO20 |
| 封装： | SO-20 |
| 文件页数： | 11/14页 |
| 文件大小： | 381K |
| 代理商： | TDA744813TR |
TDA7448
6/14
5
SOFTWARE SPECIFICATION
Interface Protocol
The interface protocol comprises:
■
A start condition (S)
■
A chip address byte, containing the TDA7448 address
■
A subaddress bytes
■
A sequence of data (N byte + acknowledge)
■
A stop condition (P))
ACK = Acknowledge;
S = Start;
P = Stop;
A = Address;
B = Auto Increment
5.1 EXAMPLES
5.1.1 No Incremental Bus
The TDA7448 receives a start condition, the correct chip address, a subaddress with the B = 0 (no incremental
bus), N-data (all these data concern the subaddress selected), a stop condition.
5.1.2 Incremental Bus
The TDA7448 receivea start conditions, the correct chip address, a subaddress with the B = 1 (incremental bus):
now it is in a loop condition with an autoincrease of the subaddress whereas SUBADDRESS from "XXX1000"
to "XXX1111" of DATA are ignored.The DATA 1 concern the subaddress sent, and the DATA 2 concern the
subaddress sent plus one in the loop etc, and at the end it receivers the stop condition.
5.2 DATA BYTES
Address= 88 (HEX) (10001000): ADDR open; 8A (HEX) (10001010): connect to supply
Table 6. FUNCTION SELECTION: subaddress
B=1: INCREMENTAL BUS; ACTIVE
B=0: NO INCREMENTAL BUS
X= DON’T CARE
MSB
LSB
SUBADDRESS
D7
D6
D5
D4
D3
D2
D1
D0
X
B
0
SPEAKER ATTENUATION OUT 1
X
B
0
1
SPEAKER ATTENUATION OUT 2
X
B
0
1
0
SPEAKER ATTENUATION OUT 3
X
B
0
1
SPEAKER ATTENUATION OUT 4
X
B
0
1
0
SPEAKER ATTENUATION OUT 5
X
B
0
1
0
1
SPEAKER ATTENUATION OUT 6
X
B
01
10
NOT USED”
X
B
01
11
NOT USED
S
1
0
1
0
ACK
DATA
ACK
P
MSB
LSB
MSB
LSB
MSB
LSB
CHIP ADDRESS
D96AU420
X
DATA
SUBADDRESS
DATA 1 to DATA n
X
B
S
1
0
1
0
ACK
DATA
ACK
P
MSB
LSB
MSB
LSB
MSB
LSB
CHIP ADDRESS
D96AU421
X
D3
SUBADDRESS
DATA
X
0
D2 D1 D0
S
1
0
1
0
ACK
DATA
ACK
P
MSB
LSB
MSB
LSB
MSB
LSB
CHIP ADDRESS
D96AU422
X
D3
SUBADDRESS
DATA 1 to DATA n
X
1
D2 D1 D0
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相关代理商/技术参数 |
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|---|---|
| TDA7448-EVB | 功能描述:音频 IC 开发工具 Eval Brd for TDA7448 RoHS:否 制造商:Texas Instruments 产品:Evaluation Kits 类型:Audio Amplifiers 工具用于评估:TAS5614L 工作电源电压:12 V to 38 V |
| TDA7449 | 功能描述:音频 DSP Tone Control Digital RoHS:否 制造商:Texas Instruments 工作电源电压: 电源电流: 工作温度范围: 安装风格: 封装 / 箱体: 封装:Tube |
| TDA7449_04 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:TONE CONTROL DIGITALLY CONTROLLED AUDIO PROCESSOR |
| TDA7449D | 制造商:STMicroelectronics 功能描述: |
| TDA7449D13TR | 功能描述:音频 DSP Audio Tone CTRL 2 Stereo Inputs 1 dB RoHS:否 制造商:Texas Instruments 工作电源电压: 电源电流: 工作温度范围: 安装风格: 封装 / 箱体: 封装:Tube |
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